Stent, manufacturing method therof and indwelling method therof

摘要

A stent, a manufacturing method thereof and indwelling method thereof are provided, the stent being capable of increasing diameter change enlarging and contracting in accordance with temperature change for being freely selectable and applicable to different diameter of intracorporeal lacuna, thereby improving safety and reducing burden of treatment for patients. The stent has a hollow cylindrical body (3) by braiding a plurality of filament body (2) made of Ti-Ni alloy of excessive Ni. A lower-temperature shape memorizing process and a higher-temperature shape memorizing process are conducted to the hollow cylindrical body (3) to memorize first shape of lower-temperature and second shape of higher-temperature having mutually different cylindrical diameter and the cylindrical diameter changes in accordance with temperature change. The crossing filament bodies (2) are fixed only at both ends (3A, 3B) of the stent.